2253543421 has 4 divisors (see below), whose sum is σ = 2254813372. Its totient is φ = 2252273472.

The previous prime is 2253543407. The next prime is 2253543437. The reversal of 2253543421 is 1243453522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1066740921 + 1186802500 = 32661^2 + 34450^2 .

It is a cyclic number.

It is not a de Polignac number, because 2253543421 - 2⁵ = 2253543389 is a prime.

It is a super-3 number, since 3×2253543421³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2253543491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632310 + ... + 635863.

It is an arithmetic number, because the mean of its divisors is an integer number (563703343).

Almost surely, 2^2253543421 is an apocalyptic number.

It is an amenable number.

2253543421 is a deficient number, since it is larger than the sum of its proper divisors (1269951).

2253543421 is a wasteful number, since it uses less digits than its factorization.

2253543421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269950.

The product of its digits is 28800, while the sum is 31.

The square root of 2253543421 is about 47471.5011454241. The cubic root of 2253543421 is about 1311.0582170637.

Adding to 2253543421 its reverse (1243453522), we get a palindrome (3496996943).

It can be divided in two parts, 22535 and 43421, that added together give a palindrome (65956).

The spelling of 2253543421 in words is "two billion, two hundred fifty-three million, five hundred forty-three thousand, four hundred twenty-one".